IGCSE O Level Biology MCQs – Practice Test 1 (Chapter 2)
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MCQ 1: Amount of light entering eye is controlled through:
MCQ 2: In dim light, the circular muscles:
MCQ 3: Eyeball is kept firm and refracting light through:
MCQ 4: In the outer corner of the upper lid of eye, is the:
MCQ 5: Innermost layer of eyeball is:
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